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            rhino3dm
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                8.6.0-beta1
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              <p class="caption" role="heading"><span class="caption-text">Contents:</span></p>
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<li class="toctree-l1"><a class="reference internal" href="AnnotationBase.html">AnnotationBase</a></li>
<li class="toctree-l1 current"><a class="current reference internal" href="#">Arc</a><ul>
<li class="toctree-l2"><a class="reference internal" href="#rhino3dm.Arc"><code class="docutils literal notranslate"><span class="pre">Arc</span></code></a><ul>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.Arc"><code class="docutils literal notranslate"><span class="pre">Arc.Arc()</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#id0"><code class="docutils literal notranslate"><span class="pre">Arc.Arc()</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#id1"><code class="docutils literal notranslate"><span class="pre">Arc.Arc()</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#id2"><code class="docutils literal notranslate"><span class="pre">Arc.Arc()</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.IsValid"><code class="docutils literal notranslate"><span class="pre">Arc.IsValid</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.IsCircle"><code class="docutils literal notranslate"><span class="pre">Arc.IsCircle</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.Radius"><code class="docutils literal notranslate"><span class="pre">Arc.Radius</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.Diameter"><code class="docutils literal notranslate"><span class="pre">Arc.Diameter</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.Plane"><code class="docutils literal notranslate"><span class="pre">Arc.Plane</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.Center"><code class="docutils literal notranslate"><span class="pre">Arc.Center</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.Circumference"><code class="docutils literal notranslate"><span class="pre">Arc.Circumference</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.Length"><code class="docutils literal notranslate"><span class="pre">Arc.Length</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.StartPoint"><code class="docutils literal notranslate"><span class="pre">Arc.StartPoint</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.MidPoint"><code class="docutils literal notranslate"><span class="pre">Arc.MidPoint</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.EndPoint"><code class="docutils literal notranslate"><span class="pre">Arc.EndPoint</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.AngleDomain"><code class="docutils literal notranslate"><span class="pre">Arc.AngleDomain</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.StartAngle"><code class="docutils literal notranslate"><span class="pre">Arc.StartAngle</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.EndAngle"><code class="docutils literal notranslate"><span class="pre">Arc.EndAngle</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.AngleRadians"><code class="docutils literal notranslate"><span class="pre">Arc.AngleRadians</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.StartAngleDegrees"><code class="docutils literal notranslate"><span class="pre">Arc.StartAngleDegrees</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.EndAngleDegrees"><code class="docutils literal notranslate"><span class="pre">Arc.EndAngleDegrees</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.AngleDegrees"><code class="docutils literal notranslate"><span class="pre">Arc.AngleDegrees</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.Trim"><code class="docutils literal notranslate"><span class="pre">Arc.Trim()</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.BoundingBox"><code class="docutils literal notranslate"><span class="pre">Arc.BoundingBox()</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.PointAt"><code class="docutils literal notranslate"><span class="pre">Arc.PointAt()</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.TangentAt"><code class="docutils literal notranslate"><span class="pre">Arc.TangentAt()</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.ClosestParameter"><code class="docutils literal notranslate"><span class="pre">Arc.ClosestParameter()</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.ClosestPoint"><code class="docutils literal notranslate"><span class="pre">Arc.ClosestPoint()</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.Reverse"><code class="docutils literal notranslate"><span class="pre">Arc.Reverse()</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.Transform"><code class="docutils literal notranslate"><span class="pre">Arc.Transform()</span></code></a></li>
<li class="toctree-l3"><a class="reference internal" href="#rhino3dm.Arc.ToNurbsCurve"><code class="docutils literal notranslate"><span class="pre">Arc.ToNurbsCurve()</span></code></a></li>
</ul>
</li>
</ul>
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<li class="toctree-l1"><a class="reference internal" href="ArcCurve.html">ArcCurve</a></li>
<li class="toctree-l1"><a class="reference internal" href="ArchivableDictionary.html">ArchivableDictionary</a></li>
<li class="toctree-l1"><a class="reference internal" href="BezierCurve.html">BezierCurve</a></li>
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<li class="toctree-l1"><a class="reference internal" href="File3dm.html">File3dm</a></li>
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  <section id="module-rhino3dm">
<span id="arc"></span><h1>Arc<a class="headerlink" href="#module-rhino3dm" title="Link to this heading"></a></h1>
<dl class="py class">
<dt class="sig sig-object py" id="rhino3dm.Arc">
<em class="property"><span class="pre">class</span><span class="w"> </span></em><span class="sig-prename descclassname"><span class="pre">rhino3dm.</span></span><span class="sig-name descname"><span class="pre">Arc</span></span><a class="headerlink" href="#rhino3dm.Arc" title="Link to this definition"></a></dt>
<dd><dl class="py method">
<dt class="sig sig-object py" id="rhino3dm.Arc.Arc">
<span class="sig-name descname"><span class="pre">Arc</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">circle</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">angleRadians</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#rhino3dm.Arc.Arc" title="Link to this definition"></a></dt>
<dd><p>Initializes a new instance of an arc from a base circle and an angle.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>circle</strong> (<a class="reference internal" href="Circle.html#rhino3dm.Circle" title="rhino3dm.Circle"><em>Circle</em></a>) – Circle to base arc upon.</p></li>
<li><p><strong>angleRadians</strong> (<em>float</em>) – Sweep angle of arc (in radians)</p></li>
</ul>
</dd>
</dl>
</dd></dl>

<dl class="py method">
<dt class="sig sig-object py" id="id0">
<span class="sig-name descname"><span class="pre">Arc</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">center</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">radius</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">angleRadians</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#id0" title="Link to this definition"></a></dt>
<dd><p>Initializes a new horizontal arc at the given center point, with a custom radius and angle.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>center</strong> (<a class="reference internal" href="Point3d.html#rhino3dm.Point3d" title="rhino3dm.Point3d"><em>rhino3dm.Point3d</em></a>) – Center point of arc.</p></li>
<li><p><strong>radius</strong> (<em>float</em>) – Radius of arc.</p></li>
<li><p><strong>angleRadians</strong> (<em>float</em>) – Sweep angle of arc (in radians)</p></li>
</ul>
</dd>
</dl>
</dd></dl>

<dl class="py method">
<dt class="sig sig-object py" id="id1">
<span class="sig-name descname"><span class="pre">Arc</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">startPoint</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">pointOnInterior</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">endPoint</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#id1" title="Link to this definition"></a></dt>
<dd><p>Initializes a new arc through three points. If the points are coincident
or co-linear, this will result in an Invalid arc.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>startPoint</strong> (<a class="reference internal" href="Point3d.html#rhino3dm.Point3d" title="rhino3dm.Point3d"><em>rhino3dm.Point3d</em></a>) – Start point of arc.</p></li>
<li><p><strong>pointOnInterior</strong> (<a class="reference internal" href="Point3d.html#rhino3dm.Point3d" title="rhino3dm.Point3d"><em>rhino3dm.Point3d</em></a>) – Point on arc interior.</p></li>
<li><p><strong>endPoint</strong> (<a class="reference internal" href="Point3d.html#rhino3dm.Point3d" title="rhino3dm.Point3d"><em>rhino3dm.Point3d</em></a>) – End point of arc.</p></li>
</ul>
</dd>
</dl>
</dd></dl>

<dl class="py method">
<dt class="sig sig-object py" id="id2">
<span class="sig-name descname"><span class="pre">Arc</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">pointA</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">tangentA</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">pointB</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#id2" title="Link to this definition"></a></dt>
<dd><p>Initializes a new arc from end points and a tangent vector.
If the tangent is parallel with the endpoints this will result in an Invalid arc.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><ul class="simple">
<li><p><strong>pointA</strong> (<a class="reference internal" href="Point3d.html#rhino3dm.Point3d" title="rhino3dm.Point3d"><em>rhino3dm.Point3d</em></a>) – Start point of arc.</p></li>
<li><p><strong>tangentA</strong> (<a class="reference internal" href="Vector3d.html#rhino3dm.Vector3d" title="rhino3dm.Vector3d"><em>rhino3dm.Vector3d</em></a>) – Tangent at start of arc.</p></li>
<li><p><strong>pointB</strong> (<a class="reference internal" href="Point3d.html#rhino3dm.Point3d" title="rhino3dm.Point3d"><em>rhino3dm.Point3d</em></a>) – End point of arc.</p></li>
</ul>
</dd>
</dl>
</dd></dl>

<dl class="py attribute">
<dt class="sig sig-object py" id="rhino3dm.Arc.IsValid">
<span class="sig-name descname"><span class="pre">IsValid</span></span><a class="headerlink" href="#rhino3dm.Arc.IsValid" title="Link to this definition"></a></dt>
<dd><p>bool: Gets a value indicating whether or not this arc is valid.
Detail:
Radius&gt;0 and 0&lt;AngleRadians()&lt;=2*Math.Pi.</p>
</dd></dl>

<dl class="py attribute">
<dt class="sig sig-object py" id="rhino3dm.Arc.IsCircle">
<span class="sig-name descname"><span class="pre">IsCircle</span></span><a class="headerlink" href="#rhino3dm.Arc.IsCircle" title="Link to this definition"></a></dt>
<dd><p>bool: Gets a value indicating whether or not this arc is a complete circle.</p>
</dd></dl>

<dl class="py attribute">
<dt class="sig sig-object py" id="rhino3dm.Arc.Radius">
<span class="sig-name descname"><span class="pre">Radius</span></span><a class="headerlink" href="#rhino3dm.Arc.Radius" title="Link to this definition"></a></dt>
<dd><p>float: Gets or sets the radius of this arc.</p>
</dd></dl>

<dl class="py attribute">
<dt class="sig sig-object py" id="rhino3dm.Arc.Diameter">
<span class="sig-name descname"><span class="pre">Diameter</span></span><a class="headerlink" href="#rhino3dm.Arc.Diameter" title="Link to this definition"></a></dt>
<dd><p>float: Gets or sets the Diameter of this arc.</p>
</dd></dl>

<dl class="py attribute">
<dt class="sig sig-object py" id="rhino3dm.Arc.Plane">
<span class="sig-name descname"><span class="pre">Plane</span></span><a class="headerlink" href="#rhino3dm.Arc.Plane" title="Link to this definition"></a></dt>
<dd><p>rhino3dm.Plane: Gets or sets the plane in which this arc lies.</p>
</dd></dl>

<dl class="py attribute">
<dt class="sig sig-object py" id="rhino3dm.Arc.Center">
<span class="sig-name descname"><span class="pre">Center</span></span><a class="headerlink" href="#rhino3dm.Arc.Center" title="Link to this definition"></a></dt>
<dd><p>rhino3dm.Point3d: Gets or sets the center point for this arc.</p>
</dd></dl>

<dl class="py attribute">
<dt class="sig sig-object py" id="rhino3dm.Arc.Circumference">
<span class="sig-name descname"><span class="pre">Circumference</span></span><a class="headerlink" href="#rhino3dm.Arc.Circumference" title="Link to this definition"></a></dt>
<dd><p>float: Gets the circumference of the circle that is coincident with this arc.</p>
</dd></dl>

<dl class="py attribute">
<dt class="sig sig-object py" id="rhino3dm.Arc.Length">
<span class="sig-name descname"><span class="pre">Length</span></span><a class="headerlink" href="#rhino3dm.Arc.Length" title="Link to this definition"></a></dt>
<dd><p>float: Gets the length of the arc. (Length = Radius * (subtended angle in radians)).</p>
</dd></dl>

<dl class="py attribute">
<dt class="sig sig-object py" id="rhino3dm.Arc.StartPoint">
<span class="sig-name descname"><span class="pre">StartPoint</span></span><a class="headerlink" href="#rhino3dm.Arc.StartPoint" title="Link to this definition"></a></dt>
<dd><p>rhino3dm.Point3d: Gets the start point of the arc.</p>
</dd></dl>

<dl class="py attribute">
<dt class="sig sig-object py" id="rhino3dm.Arc.MidPoint">
<span class="sig-name descname"><span class="pre">MidPoint</span></span><a class="headerlink" href="#rhino3dm.Arc.MidPoint" title="Link to this definition"></a></dt>
<dd><p>rhino3dm.Point3d: Gets the mid-point of the arc.</p>
</dd></dl>

<dl class="py attribute">
<dt class="sig sig-object py" id="rhino3dm.Arc.EndPoint">
<span class="sig-name descname"><span class="pre">EndPoint</span></span><a class="headerlink" href="#rhino3dm.Arc.EndPoint" title="Link to this definition"></a></dt>
<dd><p>rhino3dm.Point3d: Gets the end point of the arc.</p>
</dd></dl>

<dl class="py attribute">
<dt class="sig sig-object py" id="rhino3dm.Arc.AngleDomain">
<span class="sig-name descname"><span class="pre">AngleDomain</span></span><a class="headerlink" href="#rhino3dm.Arc.AngleDomain" title="Link to this definition"></a></dt>
<dd><p>rhino3dm.Interval: Gets or sets the angle domain (in Radians) of this arc.</p>
</dd></dl>

<dl class="py attribute">
<dt class="sig sig-object py" id="rhino3dm.Arc.StartAngle">
<span class="sig-name descname"><span class="pre">StartAngle</span></span><a class="headerlink" href="#rhino3dm.Arc.StartAngle" title="Link to this definition"></a></dt>
<dd><p>float: Gets or sets the start angle (in Radians) for this arc segment.</p>
</dd></dl>

<dl class="py attribute">
<dt class="sig sig-object py" id="rhino3dm.Arc.EndAngle">
<span class="sig-name descname"><span class="pre">EndAngle</span></span><a class="headerlink" href="#rhino3dm.Arc.EndAngle" title="Link to this definition"></a></dt>
<dd><p>float: Gets or sets the end angle (in Radians) for this arc segment.</p>
</dd></dl>

<dl class="py attribute">
<dt class="sig sig-object py" id="rhino3dm.Arc.AngleRadians">
<span class="sig-name descname"><span class="pre">AngleRadians</span></span><a class="headerlink" href="#rhino3dm.Arc.AngleRadians" title="Link to this definition"></a></dt>
<dd></dd></dl>

<dl class="py attribute">
<dt class="sig sig-object py" id="rhino3dm.Arc.StartAngleDegrees">
<span class="sig-name descname"><span class="pre">StartAngleDegrees</span></span><a class="headerlink" href="#rhino3dm.Arc.StartAngleDegrees" title="Link to this definition"></a></dt>
<dd><p>float: Gets or sets the start angle (in Degrees) for this arc segment.</p>
</dd></dl>

<dl class="py attribute">
<dt class="sig sig-object py" id="rhino3dm.Arc.EndAngleDegrees">
<span class="sig-name descname"><span class="pre">EndAngleDegrees</span></span><a class="headerlink" href="#rhino3dm.Arc.EndAngleDegrees" title="Link to this definition"></a></dt>
<dd><p>float: Gets or sets the end angle (in Degrees) for this arc segment.</p>
</dd></dl>

<dl class="py attribute">
<dt class="sig sig-object py" id="rhino3dm.Arc.AngleDegrees">
<span class="sig-name descname"><span class="pre">AngleDegrees</span></span><a class="headerlink" href="#rhino3dm.Arc.AngleDegrees" title="Link to this definition"></a></dt>
<dd><p>float: Gets or sets the sweep -or subtended- angle (in Degrees) for this arc segment.</p>
</dd></dl>

<dl class="py method">
<dt class="sig sig-object py" id="rhino3dm.Arc.Trim">
<span class="sig-name descname"><span class="pre">Trim</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">domain</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#rhino3dm.Arc.Trim" title="Link to this definition"></a></dt>
<dd><p>Sets arc’s angle domain (in Radians) as a sub-domain of the circle.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>domain</strong> (<a class="reference internal" href="Interval.html#rhino3dm.Interval" title="rhino3dm.Interval"><em>rhino3dm.Interval</em></a>) – 0 &lt; domain[1] - domain[0] &lt;= 2.0 * RhinoMath.Pi.</p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p>True on success, False on failure.</p>
</dd>
<dt class="field-odd">Return type<span class="colon">:</span></dt>
<dd class="field-odd"><p>bool</p>
</dd>
</dl>
</dd></dl>

<dl class="py method">
<dt class="sig sig-object py" id="rhino3dm.Arc.BoundingBox">
<span class="sig-name descname"><span class="pre">BoundingBox</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#rhino3dm.Arc.BoundingBox" title="Link to this definition"></a></dt>
<dd><p>Computes the 3D axis aligned bounding box for this arc.</p>
<dl class="field-list simple">
<dt class="field-odd">Returns<span class="colon">:</span></dt>
<dd class="field-odd"><p>Bounding box of arc.</p>
</dd>
<dt class="field-even">Return type<span class="colon">:</span></dt>
<dd class="field-even"><p><a class="reference internal" href="BoundingBox.html#rhino3dm.BoundingBox" title="rhino3dm.BoundingBox">rhino3dm.BoundingBox</a></p>
</dd>
</dl>
</dd></dl>

<dl class="py method">
<dt class="sig sig-object py" id="rhino3dm.Arc.PointAt">
<span class="sig-name descname"><span class="pre">PointAt</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">t</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#rhino3dm.Arc.PointAt" title="Link to this definition"></a></dt>
<dd><p>Gets the point at the given arc parameter.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>t</strong> (<em>float</em>) – Arc parameter to evaluate.</p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p>The point at the given parameter.</p>
</dd>
<dt class="field-odd">Return type<span class="colon">:</span></dt>
<dd class="field-odd"><p><a class="reference internal" href="Point3d.html#rhino3dm.Point3d" title="rhino3dm.Point3d">rhino3dm.Point3d</a></p>
</dd>
</dl>
</dd></dl>

<dl class="py method">
<dt class="sig sig-object py" id="rhino3dm.Arc.TangentAt">
<span class="sig-name descname"><span class="pre">TangentAt</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">t</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#rhino3dm.Arc.TangentAt" title="Link to this definition"></a></dt>
<dd><p>Gets the tangent at the given parameter.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>t</strong> (<em>float</em>) – Parameter of tangent to evaluate.</p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p>The tangent at the arc at the given parameter.</p>
</dd>
<dt class="field-odd">Return type<span class="colon">:</span></dt>
<dd class="field-odd"><p><a class="reference internal" href="Vector3d.html#rhino3dm.Vector3d" title="rhino3dm.Vector3d">rhino3dm.Vector3d</a></p>
</dd>
</dl>
</dd></dl>

<dl class="py method">
<dt class="sig sig-object py" id="rhino3dm.Arc.ClosestParameter">
<span class="sig-name descname"><span class="pre">ClosestParameter</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">testPoint</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#rhino3dm.Arc.ClosestParameter" title="Link to this definition"></a></dt>
<dd><p>Gets parameter on the arc closest to a test point.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>testPoint</strong> (<a class="reference internal" href="Point3d.html#rhino3dm.Point3d" title="rhino3dm.Point3d"><em>rhino3dm.Point3d</em></a>) – Point to get close to.</p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p>Parameter (in radians) of the point on the arc that is closest to the test point. If testPoint is the center of the arc, then the starting point of the arc is (arc.Domain()[0]) returned. If no parameter could be found, RhinoMath.UnsetValue is returned.</p>
</dd>
<dt class="field-odd">Return type<span class="colon">:</span></dt>
<dd class="field-odd"><p>float</p>
</dd>
</dl>
</dd></dl>

<dl class="py method">
<dt class="sig sig-object py" id="rhino3dm.Arc.ClosestPoint">
<span class="sig-name descname"><span class="pre">ClosestPoint</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">testPoint</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#rhino3dm.Arc.ClosestPoint" title="Link to this definition"></a></dt>
<dd><p>Computes the point on an arc that is closest to a test point.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>testPoint</strong> (<a class="reference internal" href="Point3d.html#rhino3dm.Point3d" title="rhino3dm.Point3d"><em>rhino3dm.Point3d</em></a>) – Point to get close to.</p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p>The point on the arc that is closest to testPoint. If testPoint is the center of the arc, then the starting point of the arc is returned. UnsetPoint on failure.</p>
</dd>
<dt class="field-odd">Return type<span class="colon">:</span></dt>
<dd class="field-odd"><p><a class="reference internal" href="Point3d.html#rhino3dm.Point3d" title="rhino3dm.Point3d">rhino3dm.Point3d</a></p>
</dd>
</dl>
</dd></dl>

<dl class="py method">
<dt class="sig sig-object py" id="rhino3dm.Arc.Reverse">
<span class="sig-name descname"><span class="pre">Reverse</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#rhino3dm.Arc.Reverse" title="Link to this definition"></a></dt>
<dd><p>Reverses the orientation of the arc. Changes the domain from [a,b]
to [-b,-a].</p>
<dl class="field-list simple">
<dt class="field-odd">Return type<span class="colon">:</span></dt>
<dd class="field-odd"><p>void</p>
</dd>
</dl>
</dd></dl>

<dl class="py method">
<dt class="sig sig-object py" id="rhino3dm.Arc.Transform">
<span class="sig-name descname"><span class="pre">Transform</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">xform</span></span></em><span class="sig-paren">)</span><a class="headerlink" href="#rhino3dm.Arc.Transform" title="Link to this definition"></a></dt>
<dd><p>Transforms the arc using a Transformation matrix.</p>
<dl class="field-list simple">
<dt class="field-odd">Parameters<span class="colon">:</span></dt>
<dd class="field-odd"><p><strong>xform</strong> (<a class="reference internal" href="Transform.html#rhino3dm.Transform" title="rhino3dm.Transform"><em>Transform</em></a>) – Transformations to apply. Note that arcs cannot handle non-euclidean transformations.</p>
</dd>
<dt class="field-even">Returns<span class="colon">:</span></dt>
<dd class="field-even"><p>True on success, False on failure.</p>
</dd>
<dt class="field-odd">Return type<span class="colon">:</span></dt>
<dd class="field-odd"><p>bool</p>
</dd>
</dl>
</dd></dl>

<dl class="py method">
<dt class="sig sig-object py" id="rhino3dm.Arc.ToNurbsCurve">
<span class="sig-name descname"><span class="pre">ToNurbsCurve</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#rhino3dm.Arc.ToNurbsCurve" title="Link to this definition"></a></dt>
<dd><p>Initializes a nurbs curve representation of this arc.
This amounts to the same as calling NurbsCurve.CreateFromArc().</p>
<dl class="field-list simple">
<dt class="field-odd">Returns<span class="colon">:</span></dt>
<dd class="field-odd"><p>A nurbs curve representation of this arc or None if no such representation could be made.</p>
</dd>
<dt class="field-even">Return type<span class="colon">:</span></dt>
<dd class="field-even"><p><a class="reference internal" href="NurbsCurve.html#rhino3dm.NurbsCurve" title="rhino3dm.NurbsCurve">rhino3dm.NurbsCurve</a></p>
</dd>
</dl>
</dd></dl>

</dd></dl>

</section>


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